<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script> 
</head>
<body>
    <div id="app">
        证书：
        <input type="radio" name="certificate" value="高" v-model="level">高级
        <input type="radio" name="certificate" value="中" v-model="level">中级
        <input type="radio" name="certificate" value="初" v-model="level">初级
        <p>您的证书等级是：{{level}}</p>
        </div>
</body> 
<script type="text/javascript">
    const RootComponent ={
        data(){
            return{
                level:'高级'
            }
        }
    }
const vueApp = Vue.createApp(RootComponent)
vueApp.mount('#app')
</script>
</html>